"...shortly after Jesus was crucified people thought he was coming back and they thought he was coming back real soon. So you were told not to bother marrying and going about having kids and having sex because there wasn't any point." Uh, no, they weren't. Not sure where you got that from.
A few early church leaders (notably Paul) did not marry, while others were married (Jesus is said to have healed Peter's mother-in-law--it's pretty hard to have a mother-in-law unless you're married). There were some later (hermits) who also practiced celibacy, but that came later. Not marrying was not really a thing until much later--around 304 AD the Roman Catholic Church adopted a stand on those seeking ordination to be celibate, but that was not for everyone. And the Eastern Church and the Eastern Orthodox Church never really went along with even the priestly celibacy thing. Even in the Roman Catholic church, priestly celibacy wasn't enforced until the 11th century.